Struct ServerCapabilities 

pub struct ServerCapabilities {
    pub tools: Option<ToolsCapabilities>,
    pub resources: Option<ResourcesCapabilities>,
    pub prompts: Option<PromptsCapabilities>,
    pub logging: Option<LoggingCapabilities>,
    pub completions: Option<CompletionCapabilities>,
    pub tasks: Option<ServerTasksCapabilities>,
    pub extensions: Option<HashMap<String, Value>>,
    pub experimental: Option<HashMap<String, Value>>,
}

Capabilities supported by a server.

Per MCP 2025-11-25: tools, resources, prompts, logging, completions, tasks, experimental.

Fields

tools: Option<ToolsCapabilities>

Support for tools.

resources: Option<ResourcesCapabilities>

Support for resources.

prompts: Option<PromptsCapabilities>

Support for prompts.

logging: Option<LoggingCapabilities>

Support for logging.

completions: Option<CompletionCapabilities>

Support for argument autocompletion.

tasks: Option<ServerTasksCapabilities>

Support for the Tasks API (MCP 2025-11-25 draft, SEP-1686).

When present, indicates the server can receive task-augmented requests (e.g. tools/call).

extensions: Option<HashMap<String, Value>>

Draft extensions supported by the server.

experimental: Option<HashMap<String, Value>>

Experimental, non-standard capabilities.

Trait Implementations

impl Clone for ServerCapabilities

fn clone(&self) -> ServerCapabilities

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ServerCapabilities

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for ServerCapabilities

fn default() -> ServerCapabilities

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ServerCapabilities

fn deserialize<__D>( __deserializer: __D, ) -> Result<ServerCapabilities, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ServerCapabilities

fn eq(&self, other: &ServerCapabilities) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ServerCapabilities

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ServerCapabilitiesBuilderExt for ServerCapabilities

fn builder() -> ServerCapabilitiesBuilder

Create a new ServerCapabilitiesBuilder with type-state validation.

impl StructuralPartialEq for ServerCapabilities